KISS (Keep it simple, stupid) - The acronym was reportedly coined by Kelly Johnson, lead engineer at the Lockheed Skunk Works (creators of the Lockheed U-2 and SR-71 Blackbird spy planes, among many others).
Quoting Smithsonian National Air and Space Museum | Lockheed P-38J-10-LO Lightning : In the P-38 Lockheed engineer Clarence "Kelly" Johnson and his team of designers created one of the most successful twin-engine fighters ever flown by any nation. F Things that make ideal presents for divers include dive watches, log books, dive equipment, submersible video setups, and scuba toys.
Kelly Johnson (engineer) - Clarence Leonard "Kelly" Johnson (February 27, 1910 – December 21, 1990) was an American system engineer and aeronautical innovator. He earned renown for his contributions to many noteworthy aircraft designs, especially the Lockheed U-2 and SR-71 Blackbird spy planes, but also including the P-38 Lightning, P-80 Shooting Star, and F-104 Starfighter, among others.
Swedish American: Clarence Leonard "Kelly" Johnson, engineer and aeronautical innovator. Born in Michigan, USA to Swedish parents from the city of Malmö, Skåne County. “That damned Swede”, who could “actually see air”. Kelly Johnson had a motto he supposedly applied to everything he did in life - The K.I.S.S. Principle or “Keep It Simple, Stupid". How Swede is that! ;-)